Test directory: Metanephrines, 24Hr Urine

Ordering Code301
Test NameMetanephrines, 24Hr Urine
AliasMetanephrines, Fractionated
Preferred SpecimenUrine, 24 Hour
Preferred Container24 Hour Urine Container
Ok to add preservative after collection.
Other Specimen/ContainerUrine without preservative is acceptable only if pH<6 and sample is shipped frozen.
Optimum Volume10 mL
Collection InstructionsKeep refrigerated during collection
Patient age & sex required on requisition
Patient should avoid caffeine (coffee, tea, energy drinks, etc.) and nicotine (tobacco) for 3 days prior to specimen collection. It is preferable for the patient to be off medications for 3 days prior to collection. Medications which are alpha agonists (Aldomet), alpha blockers (Dibenzyline) should be avoided 18-24 hr prior to collection. Common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference.
Handling InstructionsAdjust to pH<3 with 6N HCl.
Transport RequirementsOahu: Refrigerated
Airline: Refrigerated
Specimen StabilityUnpreserved urine:
Ambient: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 Days
Preserved urine:
Ambient: 10 Days
Refrigerated: 14 Days
Frozen: 90 Days
Rejection CriteriaUrine collected with boric acid
Avail. StatNO
Analytic TimeUp to 6 Days
MethodologyChromatography/Mass Spectrometry
Reference Lab Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of April 26, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Total VolumeALLSee report.
MetanephrineALLSee report.
NormetanephrineALLSee report.
Total MetanephrinesALLSee report.